Visualization of surface acoustic waves by scanning electron microscopy

This paper reports a scanning electron microscopy visualization of surface acoustic waves in single- and poly-domains LiNbO3 crystals. This SEM method is very useful to visualize traveling and standing surface acoustic waves in SAW-devices and to observe the interaction between SAWs and defects on crystal surfaces. Furthermore, we investigated the interaction between SAWs and regular domain structures in LiNbO3 crystals